375265621 has 2 divisors, whose sum is σ = 375265622. Its totient is φ = 375265620.

The previous prime is 375265619. The next prime is 375265651. The reversal of 375265621 is 126562573.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373030596 + 2235025 = 19314^2 + 1495^2 .

It is an emirp because it is prime and its reverse (126562573) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 375265621 - 2¹ = 375265619 is a prime.

Together with 375265619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (375265651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187632810 + 187632811.

It is an arithmetic number, because the mean of its divisors is an integer number (187632811).

Almost surely, 2^375265621 is an apocalyptic number.

It is an amenable number.

375265621 is a deficient number, since it is larger than the sum of its proper divisors (1).

375265621 is an equidigital number, since it uses as much as digits as its factorization.

375265621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 375265621 is about 19371.7738217232. The cubic root of 375265621 is about 721.2950079794.

The spelling of 375265621 in words is "three hundred seventy-five million, two hundred sixty-five thousand, six hundred twenty-one".